Time and Distance Questions

FACTS  AND  FORMULAE  FOR  TIME  AND  DISTANCE

1.Speed = DistanceTime,  Time=DistanceSpeed, Distance= Speed×Time 

 

2. x km/hr = x×518 m/sec

 

3. x m/sec = x×185 km/hr

4. If the ratio of the speeds of A and B is a:b , then the ratio of the times taken by them to cover the same distance is or b : a

5. Suppose a man covers a certain distance at x km/ hr and an equal distance at y km/hr . Then, the average speed during the whole journey is 2xyx+ykm/hr.

Q:

A car can cover 350 km in 4 hrs. If its speed is decreased by 12.5 kmph. How much time does the car take to cover a distance of 450 kms.

A) 6 hrs B) 5 hrs
C) 4 hrs D) 7 hrs
 
Answer & Explanation Answer: A) 6 hrs

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Q:

Keerthana takes 9 hrs 20 min in walking a distance and riding back to same place where she started. She could walk both ways in 11 hrs 15 min. The time taken by her to ride back both ways is

A) 7 hrs 25 min B) 7 hrs 35 min
C) 7 hrs 45 min D) 7 hrs 15 min
 
Answer & Explanation Answer: A) 7 hrs 25 min

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Q:

1/3 part of a certain journey is covered with the speed of 25 km/hr, 1/2 part of the journey is covered with the speed of 45 km/hr and the remaining part covered with the speed of 37.5 km/hr. What is the average speed (in km/hr) for the whole journey?

 

A) 37.08 B) 34.61
C) 43 D) 56
 
Answer & Explanation Answer: B) 34.61

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Q:

The speed of car B is half the speed of car A. If car A covers a distance of 120 km in 1.5 hours, what is the speed of car B?

A) 40 kmph B) 60 kmph
C) 30 kmph D) 50 kmph
 
Answer & Explanation Answer: A) 40 kmph

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Q:

A spaceship travels at 1,260 km/h. How many metres does it travel in 1/10 th of a second?

A) 126 B) 35
C) 36 D) 125
 
Answer & Explanation Answer: B) 35

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Q:

Chandan travelled equal distance with speed of 3 kmph, 4 kmph and 8kmph and takes a total time of 42.5 min. Find the total distance in km.

A) 4 B) 2
C) 1 D) 3
 
Answer & Explanation Answer: D) 3

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Q:

Ram travels 4/9th of the total journey by bus, 5/18th by rail and the remaining 10 km on foot. Find the distance of total journey.

 

A) 42 km B) 90 km
C) 36 km D) 18 km
 
Answer & Explanation Answer: C) 36 km

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Q:

A bus is running at a speed of 90 kmph. What distance will it cover in 20 seconds?

A) 500 m B) 450 m
C) 180 m D) 600 m
 
Answer & Explanation Answer: A) 500 m

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